Insulator secured under tension to an insulator rack



Sept. 30, 1952 F. G. RIDGERS ET AL 2,612,540

INSULATOR SECURED UNDER TENSION TO AN INSULATOR RACK Filed July 18, 1950Patented Sept. 30, 1952 INSULATOR, SECURED UNDER TENSION T i.ANJNSULATQRBACK Frederick G'. Ri ers and Charlie W. oass'isQ Canada,assignors to N.

' i Hamilton, Ontario,

1 Slater Company Lim Canada ited, Hamilton, -0'ntal'ilo,

Application July is, 1950; Serial No. 174,43?

1 Claim. 1

This invention relates to a wire holder.

The objects of the invention, generally, are to improve on known wireholders, particularly of the type wherein the insulator is attached to abacking member or supportby a, U-shaped clamping member which hashooked, inturned or clinched end portions. a

A specific object of the invention is to provide a wire holder of thetype hereinbefore referred to, wherein the insulator is easily attachedto the support, and once so attached, remains firmly held against and tothe support Without loosening or rattling, irrespective of the load orthrust imposed upon the insulator.

Another specific object is to provide a wire holder of the typehereinbefore referred to wherein the member fastening th insulator tothe support is under tension once the insulator has been attached to thesupport,

Still another specific object of the invention is to provide a wireholder of the type herein- The web H! of the support H is formed with anelongated longitudinal slot 13, and with circular apertures I4, one oneach side of, and spaced from the adjacent end, of the slot l3. The webI9, between the apertures 14 and the opposite ends of the slot [3, isformed with pressed transverse ribs IS, the ribs extending appreciablybeyond the longitudinal edges defining the slot. As best seen in Figure5, the ribs l5 are formed by pressing or deforming the web downwardly,that is, toward the lower edges of the flanges 18 of the support I l.

The insulator Ill, as will be easily seen by reference to the drawings,is substantially a convenbefore referred to, wherein the base of theinsulator engages the support alon parallel relatively narrow portionsspaced on either side of the plane of the clamp.

In the drawings, wherein like numerals of reference indicatecorresponding parts in the various figures,

Figure 1 is a front elevation of a wire holder made in accordance withthe invention;

Figure 2 is a top plan view of Figure 1;

Figure 3 is an end view of Figure 1, as seen left to right in Figure 1;

Figure 4 is a top plan view of the insulator support;

Figure 5 is a section on line 55 in Figure 4;

Figure 6 is a section on line 6-6 in Figure 2; and,

Figure '7 is a fragmentary section on line 1--'l in Figure 2.

Referring now by numerals to the drawings, the backing member or supportis shown as H, and the insulator as 10. The insulator is attached to thesupport by a substantially U- shaped member or clamp I2. The support I Iof from i metal, is of channe1 cross-section, and its length is chosenso as to mount the selected number of insulators (on only is shown). Thesupport is suitably attached to a supporting surface (not shown).

ti'onal one, that is, one in current and wide use. For instance, as seenon two opposite faces (see Figure 1) it presents two spaced parallelportions 20 rising from a base 2|, and a transverse, spoollike member 22spaced from the base and formed to provide a circular opening 23 throughwhich the wire to be attached is passed. As seen on the other twoopposite faces (see Figure 3), it presents an inverted U defined by twoparallel portions 24 and a transverse circular spool-like portion 25,spaced from the rounded base of the, U

to provide an opening 26. The upper periphery of the spool-like portion25 is engaged by the fastening member 12 aforesaid. The insulator so fardescribed is conventional In a device according to the invention,however, the lower face of the base is formed with a recess 28 extendinglengthwise of the base, that is, lengthwise of the slot i3 of thesupport II, as best seen in Figures 3 and 6.

Such recess reduces the effective bearing surface of the lower face ofthe base, to two spaced, elongated, relatively narrow areas or portions29, one on either side of the longitudinal axis of the recess I3. Suchrecessalso provides a space or clearance which permits of the deflectionup wardly of the web toward the base, as best seen in Figures 3 and 6.

The U-shaped clamp or fastening member I2 is passedthrough the aperture26 of the insulator to engage the spool-likeportion 22, its lower endspassed through the apertures M of the supporting member II, and the endsturned or clinched partly around the ribs or anchor portions l5 as at[6, in a manner to cause the insulator tightly to engage the supportwhile deflecting the web upwardly into the recess 28. Conveniently, the

extreme ends of the clamp are received into the slot [3, all as bestseen in Figure 7. Thus, both the clamp and the web will be undertension, tightly holding the insulator in position.

As the insulator bears upon the support along spaced elongated andrelatively narrow areas or portions, one on either side of the plane ofthe clamping member (or longitudinal axis of the slot [3), the insulatorwill be firmly held against the support, as already stated, and theinsulator will not become loosened and will not rattle.

through said insulator and having its ends passing through said circularapertures in said channelled support and clinched up through saidcentral oval shaped aperture under such tension that said channelledsupport is resiliently forced upwardly into said central recess.

FREDERICK G. RIDGERS.

CHARLIE W. CASSELS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number I Name Date 928,709 Steinberger July 20,1909 1,225,460 McCarthy May 8, 1917 1,832,138 Pounder Nov. 17, 1931FOREIGN PATENTS Number Country Date 90,569 Switzerland Nov. 24, 1920

